﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SpringStudio.Common
{
    public class ChineseHelper
    {
        /// <summary>
        /// 拼音字节编码数组
        /// </summary>
        protected int[] _pinyinCode = new int[]{
            -20319,-20317,-20304,-20295,-20292,-20283,-20265,-20257,-20242,-20230,-20051,-20036,-20032,-20026,-20002,-19990,-19986,-19982,-19976,-19805,
            -19784,-19775,-19774,-19763,-19756,-19751,-19746,-19741,-19739,-19728,-19725,-19715,-19540,-19531,-19525,-19515,-19500,-19484,-19479,-19467,
            -19289,-19288,-19281,-19275,-19270,-19263,-19261,-19249,-19243,-19242,-19238,-19235,-19227,-19224,-19218,-19212,-19038,-19023,-19018,-19006,
            -19003,-18996,-18977,-18961,-18952,-18783,-18774,-18773,-18763,-18756,-18741,-18735,-18731,-18722,-18710,-18697,-18696,-18526,-18518,-18501,
            -18490,-18478,-18463,-18448,-18447,-18446,-18239,-18237,-18231,-18220,-18211,-18201,-18184,-18183,-18181,-18012,-17997,-17988,-17970,-17964,
            -17961,-17950,-17947,-17931,-17928,-17922,-17759,-17752,-17733,-17730,-17721,-17703,-17701,-17697,-17692,-17683,-17676,-17496,-17487,-17482,
            -17468,-17454,-17433,-17427,-17417,-17202,-17185,-16983,-16970,-16942,-16915,-16733,-16708,-16706,-16689,-16664,-16657,-16647,-16474,-16470,
            -16465,-16459,-16452,-16448,-16433,-16429,-16427,-16423,-16419,-16412,-16407,-16403,-16401,-16393,-16220,-16216,-16212,-16205,-16202,-16187,
            -16180,-16171,-16169,-16158,-16155,-15959,-15958,-15944,-15933,-15920,-15915,-15903,-15889,-15878,-15707,-15701,-15681,-15667,-15661,-15659,
            -15652,-15640,-15631,-15625,-15454,-15448,-15436,-15435,-15419,-15416,-15408,-15394,-15385,-15377,-15375,-15369,-15363,-15362,-15183,-15180,
            -15165,-15158,-15153,-15150,-15149,-15144,-15143,-15141,-15140,-15139,-15128,-15121,-15119,-15117,-15110,-15109,-14941,-14937,-14933,-14930,
            -14929,-14928,-14926,-14922,-14921,-14914,-14908,-14902,-14894,-14889,-14882,-14873,-14871,-14857,-14678,-14674,-14670,-14668,-14663,-14654,
            -14645,-14630,-14594,-14429,-14407,-14399,-14384,-14379,-14368,-14355,-14353,-14345,-14170,-14159,-14151,-14149,-14145,-14140,-14137,-14135,
            -14125,-14123,-14122,-14112,-14109,-14099,-14097,-14094,-14092,-14090,-14087,-14083,-13917,-13914,-13910,-13907,-13906,-13905,-13896,-13894,
            -13878,-13870,-13859,-13847,-13831,-13658,-13611,-13601,-13406,-13404,-13400,-13398,-13395,-13391,-13387,-13383,-13367,-13359,-13356,-13343,
            -13340,-13329,-13326,-13318,-13147,-13138,-13120,-13107,-13096,-13095,-13091,-13076,-13068,-13063,-13060,-12888,-12875,-12871,-12860,-12858,
            -12852,-12849,-12838,-12831,-12829,-12812,-12802,-12607,-12597,-12594,-12585,-12556,-12359,-12346,-12320,-12300,-12120,-12099,-12089,-12074,
            -12067,-12058,-12039,-11867,-11861,-11847,-11831,-11798,-11781,-11604,-11589,-11536,-11358,-11340,-11339,-11324,-11303,-11097,-11077,-11067,
            -11055,-11052,-11045,-11041,-11038,-11024,-11020,-11019,-11018,-11014,-10838,-10832,-10815,-10800,-10790,-10780,-10764,-10587,-10544,-10533,
            -10519,-10331,-10329,-10328,-10322,-10315,-10309,-10307,-10296,-10281,-10274,-10270,-10262,-10260,-10256,-10254
        };

        /// <summary>
        /// 拼音字符串数组
        /// </summary>
        protected string[] _pinyinString = new string[]{
            "a","ai","an","ang","ao","ba","bai","ban","bang","bao","bei","ben","beng","bi","bian","biao","bie","bin","bing","bo",
            "bu","ca","cai","can","cang","cao","ce","ceng","cha","chai","chan","chang","chao","che","chen","cheng","chi","chong","chou","chu",
            "chuai","chuan","chuang","chui","chun","chuo","ci","cong","cou","cu","cuan","cui","cun","cuo","da","dai","dan","dang","dao","de",
            "deng","di","dian","diao","die","ding","diu","dong","dou","du","duan","dui","dun","duo","e","en","er","fa","fan","fang",
            "fei","fen","feng","fo","fou","fu","ga","gai","gan","gang","gao","ge","gei","gen","geng","gong","gou","gu","gua","guai",
            "guan","guang","gui","gun","guo","ha","hai","han","hang","hao","he","hei","hen","heng","hong","hou","hu","hua","huai","huan",
            "huang","hui","hun","huo","ji","jia","jian","jiang","jiao","jie","jin","jing","jiong","jiu","ju","juan","jue","jun","ka","kai",
            "kan","kang","kao","ke","ken","keng","kong","kou","ku","kua","kuai","kuan","kuang","kui","kun","kuo","la","lai","lan","lang",
            "lao","le","lei","leng","li","lia","lian","liang","liao","lie","lin","ling","liu","long","lou","lu","lv","luan","lue","lun",
            "luo","ma","mai","man","mang","mao","me","mei","men","meng","mi","mian","miao","mie","min","ming","miu","mo","mou","mu",
            "na","nai","nan","nang","nao","ne","nei","nen","neng","ni","nian","niang","niao","nie","nin","ning","niu","nong","nu","nv",
            "nuan","nue","nuo","o","ou","pa","pai","pan","pang","pao","pei","pen","peng","pi","pian","piao","pie","pin","ping","po",
            "pu","qi","qia","qian","qiang","qiao","qie","qin","qing","qiong","qiu","qu","quan","que","qun","ran","rang","rao","re","ren",
            "reng","ri","rong","rou","ru","ruan","rui","run","ruo","sa","sai","san","sang","sao","se","sen","seng","sha","shai","shan",
            "shang","shao","she","shen","sheng","shi","shou","shu","shua","shuai","shuan","shuang","shui","shun","shuo","si","song","sou","su","suan",
            "sui","sun","suo","ta","tai","tan","tang","tao","te","teng","ti","tian","tiao","tie","ting","tong","tou","tu","tuan","tui",
            "tun","tuo","wa","wai","wan","wang","wei","wen","weng","wo","wu","xi","xia","xian","xiang","xiao","xie","xin","xing","xiong",
            "xiu","xu","xuan","xue","xun","ya","yan","yang","yao","ye","yi","yin","ying","yo","yong","you","yu","yuan","yue","yun",
            "za","zai","zan","zang","zao","ze","zei","zen","zeng","zha","zhai","zhan","zhang","zhao","zhe","zhen","zheng","zhi","zhong","zhou",
            "zhu","zhua","zhuai","zhuan","zhuang","zhui","zhun","zhuo","zi","zong","zou","zu","zuan","zui","zun","zuo"
        };

        /// <summary>
        /// 将汉字字符串转化为拼音字符串
        /// </summary>
        /// <param name="hanzi">汉字字符串</param>
        /// <returns>拼音字符串</returns>
        public string ParsePinyin(string hanzi)
        {
            StringBuilder rtn = new StringBuilder();  // 定义返回值

            byte[] parts = new byte[2];  // 每个汉字分解的两个字节
            int ascii = 0;  // 单个字符ASCII码

            char[] arr = hanzi.ToCharArray();
            for (int i = 0; i < arr.Length; i++)
            {
                parts = Encoding.Default.GetBytes(arr[i].ToString());
                ascii = (int)parts[0] * 256 + (int)parts[1] - 65536;
                if (ascii > 0 && ascii < 160)  // 字母等非汉字字符
                {
                    rtn.Append(arr[i]);
                }
                else
                {
                    for (int j = this._pinyinCode.Length - 1; j >= 0; j--)
                    {
                        if (this._pinyinCode[j] <= ascii)
                        {
                            rtn.Append(this._pinyinString[j]);
                            break;
                        }
                    }
                }
            }

            return rtn.ToString();
        }
    }
}
